Related Links
Find an Ob/Gyn
Request an Appointment Online or call
1-800-789-PENN (7366)
Penn Ob/Gyn Care
Visitor Information:
HUP
  Pennsylvania Hospital
  Penn Medicine at Radnor
  Penn Medicine at Cherry Hill
PennCare: Penn's Primary Care Network for Obstetrics and Gyncology
PennCare: Penn's New Jersey Obstetric and Gynecologic Network
Encyclopedia Articles about Children's Health
 
 
   blue dot   1st Trimester
   blue dot   2nd Trimester
   blue dot   3rd Trimester
   blue dot   Birth to one Year
   blue dot   One to two Years
   blue dot   Two to three Years
 
Print Friendly
Versions
 
Subscribe to this Newsletter
Welcome To Week 3
3 Week Old Fetus

Your Baby: How Old Is Your Baby

When conception takes place, it happens midway in your menstrual cycle or at approximately 2 weeks. When you calculate your due date, that 2 weeks is counted in the calculation, therefore your estimated due date will span 40 weeks (dating back to your last period), instead of the 38 weeks since conception.

Your Body: The ABCs Of Conception

Some women have no idea they've conceived at this early date, while others can tell the exact moment it happened. Either way, conception is a magical moment for a couple, especially a woman, whose body is going to grow and change in ways never thought possible.

If you're curious about conception, here's what you need to know in a nutshell. During ovulation, which usually happens mid-cycle (on day 14 of a 28-day cycle), one of your eggs is carried into the nearest Fallopian tube. If a man's sperm makes its way to the same spot within the next 12 to 24 hours, it may fertilize that egg. You're not actually pregnant until the fertilized ovum, called a zygote, travels the rest of the way down the Fallopian tube and attaches itself to the wall of your uterus.

The catch: The average egg lives only 24 hours and the average sperm lives for 24 to 48 hours, so they have to get acquainted during the first few hours after sex if you're going to conceive. The moral of the story: If your goal is to get pregnant, you should aim to make love at least every other day during the middle of your cycle.

On That Note: Getting Graphic

The Female Reproductive System Tour shows just how far a woman's egg and a man's sperm have to travel before they actually meet up and connect to conceive a baby.

Weekly Tip

It might be a few more weeks until you miss a period - or notice one of the other signs of pregnancy -- and suspect that you're pregnant. So have a home pregnancy test on hand, but hold off using it until you would expect your period to begin. Waiting it out will help ensure that you get the right results. If the test is negative, but you don’t get your period, try taking the test again a few days later. Sometimes, the first test is too early to pick up the first traces of pregnancy hormone in your urine.

 


Need an appointment? Request one online 24 hours/day, 7 days/week or call 800-789-PENN (7366) to speak to a referral counselor.


Review Date: January 11, 2005
Reviewed By: Alison M. Stuebe, M.D., Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network.


The information provided should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Adam makes no representation or warranty regarding the accuracy, reliability, completeness, currentness, or timeliness of the content, text or graphics. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
adam.com

 

About UPHS   Contact Us   Site Map   Privacy Statement   Legal Disclaimer   Terms of Use

The University of Pennsylvania Health System, Philadelphia, PA 800-789-PENN © 2008, The Trustees of the University of Pennsylvania